| 主权项 |
1. A pulse cleaning filter system arrangement comprising:
a housing, with an inlet side and an outlet side separated by a planar tubesheet, comprising multiple tubesheet openings, the tubesheet openings being arranged in an array forming multiple rows extending in a first direction; multiple cylindrical filter cartridges having a length and a central axis, each of the filter cartridges having an open end sealed around a perimeter of one of the tubesheet openings and a closed end at the inlet side of the housing; a filter cleaning system comprising a compressed gas header extending in a second direction perpendicular to a normal of the tubesheet, multiple compressed gas outlet stub pipes extending from the header in the first direction, and right angle pulse valves, connecting each of the stub pipes to a pulse manifold pipe, comprising a first straight portion, a ninety degree bend at the outlet side of the housing, and a second straight portion at the outlet side of the housing, wherein (i) the first straight portion and the second straight portion are on a single plane, and (ii) the second straight portion is parallel with the first direction and crosses with the central axes of a set of filter cartridges sealed around the perimeter of tubesheet openings in one of the multiple rows; and a gas pulse nozzle arranged at each crossing of the second straight portion with the central axis of a filter cartridge of the set of filter cartridges, the gas pulse nozzle having a main injection axis directed along the central axis of the filter cartridge. |
